Power plane



619 1641645 swept 27 M. SKOLNIK POWER PLANE Filed. July 2O- 1925 2Sheets-Sheet l I B 88/ $6 5 J 8 Invent-or:

" Max S/rol'n/k.

Sept. 6,1927.

I M. SKOLNIK POWER PLANE Filed July 20. 1925 2 Sheets-Sheet 2 I n venfor:

Max Skolraik. I B M4 Wm Etta/mega .Patented Sept. 6, 1.927.

UNITED STATES "PAT NT oFFrc 'mAx sKOLNIx, or MINNEAPOLIS, mINNEsOTASSIGNOR To THE sKoLNIx PA ENTS,

INCORPORATED, or MINNEAPOLIS, MINNESOTA, A cORroRATION OF INDIANA.

POWER PLANE.

Application med J 'uly 20, 1925. Serial No. 44,721.

My. invention relates to' power planes,

an object is to providea plane by means of which the surface of wood maybe smoothed with the expenditure of but little effort on the part of theoperator. 1' accomplish the objects of my invention by the provision ofa support which carries a plurality of vertical shafts driven by anelectric motor and having cutters secured to their lower ends inoverlapping relation so that the wood may be smoothly planed by therotation of the cutters. I

The full objects and advantages of my in-- vention will appear inconnection with the detailed description thereof and the novel featuresembodied in my inventive idea will be particularly pointed out inth'eclaims.

In the accompanying drawings which illustrate a practical embodiment ofmy invention, Fig. 1 is a side elevational view of the device. Fig. 2 isa view mostly in vertical, longitudinal section. Fig. 3 is a bottom planview. Fig. 4 is a view in horizontal section on the line 4-4 of Fig. 2.Fig. 5 is a view showing a board partly planed.

As shown in thedrawings the device includes two bottom or base members10 and 12'which are spaced from each other. The member 10 is providedwith an upwardly extending handle member 14 at its outer end and with anupwardly extending flange 16 at its inner end. The member ,12, isprovided with an upwardly extending flange 18 at its inner end, theupper end of this flange being connected by a curved arm 20 with theouter end of the member 12. A casting 22 is placed between the flanges16 and 18. This casting has a projection 24 on one side which cooperatesslidably with a recess in the flange 16 while on the other side thecasting has a dove-tail projection 26 which cooperates slidably with acorresponding recess in the flange -18 as shown in Fig. 4. The flange 16is provided with a vertical slot 28 thru which a bolt 30 secured to thecasting 22 extends, the outer end of this bolt being provided with a nut32. The flange 18 is provided with a vertical slot 34 thru which a screw36 extends, the inner end of the screw engaging a threaded hole inthecasting and the outer vend of the screw having'a knurled head 38. Thecasting on one side has a: lug

4O providedwith a screw threaded hole for and receiving-a set screw 42which engages the upper end of the flange 16. On the other side thecasting has a lug 44 in which is rotatably mounted a screw 46 whoselower. end engages a screw threaded Opening at the up 1'.

end of the flange 18 and whose upper on is provided with a knurled head48. The up per portion of the casting 22-is formed as a'.

socket member which receives anelectric' motor 52 having a shaft 54.Current is supplied to the motor from any convenient source of electricsupply by means of wires 55 and 56.. The wire 55 connects'the motordirectly with the source of supplywhile the wire 56 connects the motorwith a contact member 58 mounted on an insulating disk 60 placed in arecess in the-up er. end ofthe andle member 14. A secon contact member62 is spaced from the contact member 58 and is connected bya wire 64with the source of electric supply. A cover plate 66 is held Over therecess by a screw 68. bridge member 70 is secured to the lower end of aplunger rod 72 passing thru the cover plate and normally held upwardlyby a 1 coiled spring 74. The circuit is completed when the rod 7 2 isdepressed. The lower end of the motor shaft 54 is mounted in a partitionmember 7 6 extending across the casting 22 and above thispartitionmember the shaft has secured thereto a gear 78 meshing with .a pluralityof gears 80 arranged concentriare provided with internally screwthreaded sockets 88 which receive the-externally screw threaded shanksof cutters 90 which project belowthe under surface of'the bottommemscrews 86. The lower ends of the shafts 82 a ber 12 and whose lowerends are intended to come flush with the under surface ofthe bottommember 10. In other words the lower surface of the member 10 is disposedbelow the lower surface of the member 12 by the amount of cut. A gaugelate 92 is secured I to the outer ends of two ro s 94 and'96. The rod 94extends thru an o ening in themember-10. and is adjustably eld by a setscrew Will-be caused to rotatewhen the plunger rod 72 is depressedsothat current is conducted to the motor. fWhile the-drawings show allof the cutters as being the; same, it will be understood that one .ormore of them may be made longer or of different shape so as to produce adeeper cut as for instance in making moldings. When they are all alike asmooth planed surface will be produced on the board B. By referring toFig. 3 it will be seen that the cutters overlap so that no ridges areleft in the planed surface. Fig. 5 shows a cut C made adjacent theedge-of the board B. Successive .cuts may be made to produce a planedsurface on the board by'adjusting the gauge late 92. .If desired one ormore cuts may be made in spaced relation to other cuts'as indicated at Cso as to leave raised portions or ribs Ron the board. The depth of cutmay be regulated by'adjusting the attach ment of the flange 18 to thecasting. When different lengths of cutters are used it will beunderstood that the flange 16 may be adi'usted on the casting so as tomaintain the ower surface of the member flush with the outer ends of thecutters. The device is moved along the material, being operated nuns-1ouponby the operator who grasps the handle 14 and the curved arm andcloses the switch to cause the cutters to rotate.

I claim: p

1. A power plane comprising a support,

an electric motor mounted on said support,

a cutting devicecarried by said supcport and her mounted at the oppositeside of said support with" its lower surfaceat a lower level.

40 driven by said motor, a vertically a justable vbase member mounted atone side of said support resting upon the unplaned material, and asecond vertically adjustable base mem than that of said first basemember for resting upon the planed material.

2. A power plane comprising a hollow casting, having a partition betweenthe-ends thereof, two base members supported for vertical adjustment atthe opposite sides of said casting for resting upon the material Intestimo nywhereof I hereunto aflix my signature.

- MAX $KOLNIK.

